Holder for a beverage container



FIG. 1 is a front view of a holder for a beverage container showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view thereof, the left side being a mirror image;

FIG. 5 is a top view thereof. 

The ornamental design for a holder for a beverage container, as shown. 